New Era 39Thirty Seattle Mariners Cooperstown Stretch Fit Hat Royal Blue $29.99 $29.99 Flexfit Sizes Choose an optionS/MM/LL/XLClear New Era 39Thirty Seattle Mariners Cooperstown Stretch Fit Hat Royal Blue quantity Add to cart SKU: N/A Categories: Hats, Flexfit Hats, Teams, MLB, Seattle Mariners Tags: CORE, FG, MLB, MLB*Stock*discontinued2021, Polyester Brand: New Era, New Era 39Thirty Hats Additional information Additional information Flexfit Sizes S/M, M/L, L/XL Color Royal Blue Related products New Era 59Fifty Boston Red Sox Fitted Black, White Hat New Era 59Fifty Montreal Expos Cooperstown Fitted Hat Black White New Era 5950 New York Yankees Fitted Blackout All Black Hat